-- -- today marks one year since the deadly attack on the Boston Marathon the anniversary serves the chance to look back for those who worked. Most closely affected by those bombing blasts it's also an opportunity to continue looking forward. It was the home stretch of one of the world's most prestigious marathons the finish line insight Boylston street Boston a year ago today. In the aftermath. Three dead more than 260. Wounded one of them -- -- -- I've put in a lot of hard work hard work and physical therapy and just found my owned practicing -- To try to. Resume my life and have -- be as normal as possible. The fast moving investigation identified two suspects one of them was dead after a shootout with police the other now in custody awaiting trial first -- today's memorial service to mark the anniversary. I think the memorial is going to be difficult for everybody but I think that by seeing those tributes. That miss out in -- folks have have have showed us their strength. Who will be -- us awful it. Boston's mayor as well as Vice President Biden along with emergency responders and survivors will all be there. After the service a procession to the marathon finish line for a moment of silence -- 2:49 PM eastern time the moment the bombs exploded last year. That finish line was laid down yesterday workers saying it was an honor. Such a great event contribute to the people that work. -- engine and people have now. This year's race is set for next Monday a larger than usual field some 36000. Drummers will tackle Boston's challenging course. Among them are the 5600. Or so -- -- on the -- last year. Organizers expect about a million people to line the route that's twice as many as usual a very loud public way of demonstrating that simple phrase -- took hold in the wake of last year's tragedy. Boston's strong. -- tune into ABC later today for live coverage of the anniversary including the moment of silence our coverage begins on air and online at 2:35 eastern time 11:35 Pacific.

This transcript has been automatically generated and may not be 100% accurate.

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